Sex and salary: A survey of purchasing and supply professionals

The purpose of this paper is to test a series of hypotheses, derived from compensation theory, on predictors of purchasing and supply management salaries. One of the hypotheses, on the effect of sex on salary, assesses competing theories, i.e. human capital versus discrimination. These hypotheses are tested using the results of a survey on purchasing and supply management salaries in Canada. Six variables were found to be significant predictors of salary. Purchasers with a professional designation, more education, more experience, greater spend responsibility, at larger organizations, and with greater share of compensation coming as a bonus reported larger salaries. In addition, after controlling for these human capital and organizational context variables, sex had a significant impact on salary. Male purchasing and supply managers reported earning significantly higher salaries than their female counterparts. The paper concludes with implications for purchasing employees and employers, along with discussion of future research opportunities.